GUI based OMR reader for OMR sheet images

摘要

Optical Mark Recognition (OMR) is an automated process of capturing and analyzing information, usually in the form of shaded bubbles. Existing OMR machine requires specially designed OMR Sheets having high quality paper and is also non-portable. Hence, the aim of this paper is to propose a cost-effective software solution named as Graphical User Interface (GUI) Based OMR Reader for OMR sheet images, having many new features in it, to eliminate the need of these huge OMR machine readers, which are very expensive. This software solution takes OMR sheet images to be evaluated as input from either a mobile phone or a dedicated camera or from a scanner, then extracts these images and also extracts marked registration number and shaded answers and finally calculates marks, which are then displayed in the Exam Result Sheet generated by the software. This proposed software solution is a Windows Forms Application on .NET Framework 4.5 and uses Image Processing with the help of AForge.NET library including AForge.Imaging and AForge.Math sub-libraries.